docs: def av_convert(self, preset=None, force=None, title=None, extname=None, filename=None,
                     width=None, height=None, upscale=None, aspect_mode=None, two_pass=None,
                     video_bitrate=None, fps=None, keyframe_interval=None, location=None,
                     watermark_url=None, watermark_top=None, watermark_bottom=None,
                     watermark_right=None, watermark_left=None, watermark_width=None, watermark_height=None,
                     path=None, access=None, container=None, audio_bitrate=None, audio_sample_rate=None,
                     audio_channels=None, clip_length=None, clip_offset=None):
  
          """
          ```python
          from filestack import Client
  
          client = Client("<API_KEY>")
          filelink = client.upload(filepath='path/to/file/doom.mp4')
          av_convert= filelink.av_convert(width=100, height=100)
          while av_convert.status != 'completed':
              print(av_convert.status)
  
          filelink = av_convert.to_filelink()
          print(filelink.url)
          ```
          """
  
          new_transform = self.add_transform_task('video_convert', locals())
          transform_url = utils.get_transform_url(
              new_transform._transformation_tasks, external_url=new_transform.external_url,
              handle=new_transform.handle, security=new_transform.security,
              apikey=new_transform.apikey, video=True
          )
  
          response = utils.make_call(transform_url, 'get')
  
          if not response.ok:
              raise Exception(response.text)
  
          uuid = response.json()['uuid']
          timestamp = response.json()['timestamp']
          
          return filestack.models.AudioVisual(
              transform_url, uuid, timestamp, apikey=new_transform.apikey, security=new_transform.security
          )